Improvement in lubricating compounds



UNITED $TATES PATENT OFFICE.

JOHN W. BARTLETT, OF MOLINE, ILLINOIS, ASSIGNOR TO HIMSELF AND MERVEN WITHERELL, OF SAME PLACE.

IMPROVEMENT IN LUBRICATING COMPOUNDS.

Specification forming part of Letters Patent N 0. [83,106, dated October 10, 1876; application filed September 16, 1876.

To all whom it may concern. twelve ounces of American soap-stone, and Beit known that I, JOHN W. BARTLETT, of two pounds of concentrated lye. These in- Moline, in the county of Rock Island and State gredients I put into ten gallons of soft water, of Illinois, have invented a new and useful boil for one hour, pour the mixture into an Improvement in Fire-Proof Lubricating Oomempty barrel, add forty gallons of soft water, pound, of which the following is a specificaand thoroughly stir it. To every five quarts tion: of this mixture I add four quarts of golden The object of this invention is to furnish an machine-oil and six ounces of pure lard-oil, improved lubricating compound for car-axles and stir it thoroughly. I then add as much and other journals and friction-surfaces, which salt and tartaric acid as it will bear. will not take fire from a hotjournal, will keep Having thus described my invention, I the journal cool, will be very durable, and claim as new and desire to secure by Letters will be inexpensive in its preparation. Patent The invention consists in a fire-proof lubri- An improved fireproof lubricating comcating compound formed of pulverized bluepound, formed of pulverized blue-stone, oilstone, oil-rock, carbonate of potash, chloride rock, carbonate of potash, chloride of lime, of lime, American soap stone, concentrated American soap-stone, concentrated lye, golden lye, golden machine-oil, pure lard-oil, salt, machine-oil, pure lard-oil, salt, tartaric acid, tartaric acid, and soft water, in the proporand soft water, in the proportions and mantions and manner hereinafter fully described. ner substantially as herein set forth.

In preparing my improved lubricator I take JOHN W. BARTLETT. three pounds of pulverized blue-stone, one Witnesses: pound of oil-rock, eight'ounces of carbonate JOHN W. WELLS,

of potash, one pound of chloride of lime, JOHN D. SCOTT. 

